Brittney Downing, 22, turned herself in to Henrico Police Tuesday morning. She will be held without bond pending her next court appearance.

Sources told CBS 6 senior reporter Wayne Covil that Downing left her children in her vehicle while she worked at a Glen Allen hotel on Sunday.

Downing called 911 just before 6 p.m. on Sunday evening and said her oldest child was in the bedroom and unresponsive at their Bailey Ridge apartment in Prince George.

When the emergency crews arrived, they pronounced the 17-month-old dead and said a 2-month-old infant in the apartment was “experiencing problems.” The baby girl was rushed to VCU Medical Center where she remains on a ventilator listed in critical condition.

CBS 6 also found that Downing faces other legal troubles, in three other counties.

In Chesterfield County she’s due in court June 10 for Misdemeanor Larceny. In Colonial Heights she’s due in court June 19 for felony obtaining moneyunder false pretense.

In Henrico County she’s due in court July 17 for speeding and driving under a revoked license; her second offense.

Police asked if you have information about the case or if you saw the mother and her two children on Sunday, to call Crime Solvers at 733-2777.

This is a developing story. Watch CBS 6 News and visit WTVR.com for updates.